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Supplier: Merck
Description: Benzenesulphonic acid for synthesis, Sigma-Aldrich®
Supplier: Apollo Scientific
Description: Benzenesulphonic acid 94%

Bürkle single-use powder and liquid funnels

Cleanroom manufactured funnels, a practical and hygienic pouring aid! Also available sterile (10-6). Made of PS, compliant to EU food and FDA regulations.

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A truly clean filling aid for your lab

Supplier: SIGMA-ALDRICH MICROSCOPY
Description: 5,10,15,20-Tetraphenyl-21H, 23H-porphine-p,p′,p,p′′′-tetrasulfonic acid tetrasodium hydrate is a water-soluble porphyrin. It is a negatively charged compound due to the presence of the sulfonate groups. It has been used to functionalize chemically converted graphene to form conductive graphene films of varying thickness.

Supplier: Thermo Scientific
Description: Benzenesulphonic acid 90%, Technical Grade
Supplier: Thermo Scientific
Description: Isopropyl benzenesulphonate 95%
Supplier: Thermo Scientific
Description: CAS No.: 515-42-4
Supplier: Thermo Scientific
Description: Benzenesulphonic acid ≥94%
Supplier: Thermo Scientific
Description: Benzenesulphonic acid ∼75% (w/w) in aqueous solution, Technical Grade
Catalog Number: (44426-100MG)
Supplier: Merck
Description: Metanil yellow, Supelco®
UOM: 1 * 100 mg


Supplier: Merck
Description: Methyl orange ACS, Reag. Ph. Eur.
Catalog Number: (250309-100G)
Supplier: SIGMA-ALDRICH MICROSCOPY
Description: 4-Amino-1,1′-azobenzene-3,4′-disulfonic acid monosodium salt, also called as acid yellow 9, belongs to the class of azo dyes.
UOM: 1 * 100 g


Catalog Number: (89456-100MG-F)
Supplier: Merck
Description: Reagent for the spectrophotometric determination of ultra trace amounts of transition metals; determination by capillary zone electrophoresis.
UOM: 1 * 100 mg


Supplier: Apollo Scientific
Description: Ethyl benzenesulphonate 95%

Supplier: Merck
Description: Methyl orange 0,1% in aqueous solution, Supelco®
Supplier: Apollo Scientific
Description: Sodium-2,6-dinitro-4-(trifluoromethyl)benzenesulphonate

Supplier: SIGMA-ALDRICH MICROSCOPY
Description: Orange II sodium salt,(Certified by the Biological Stain Commission), Dye content ≥85 % (4-(2-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt; Acid Orange 7; Acid Orange A; Orange II; Tropaeolin 000 No. 2).

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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on +353 1 88 22222.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on +353 1 88 22222
This product is marked as restricted and can only be purchased by approved Shipping Accounts. If you need further assistance, email VWR Regulatory Department at eurega_services@eu.vwr.com
-Additional Documentation May be needed to purchase this item. A VWR representative will contact you if needed.
This product has been blocked by your organisation. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
Product(s) marked with this symbol are discontinued - sold till end of stock. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service on +353 1 8822222.
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